package org.cocos2d.actions.grid;

import org.cocos2d.types.CCVertex3D;
import org.cocos2d.types.ccGridSize;

////////////////////////////////////////////////////////////

/**
 * CCWaves action
 */
public class CCWaves extends CCGrid3DAction {
    int waves;
    /**
     * amplitude
     */
    float amplitude;
    /**
     * amplitude rate
     */
    float amplitudeRate;
    boolean vertical;
    boolean horizontal;


    /**
     * creates the action with amplitude, horizontal sin, vertical sin, a grid and duration
     */
    public CCWaves(int wav, float amp, boolean h, boolean v, ccGridSize gSize, float d) {
        super(gSize, d);
        waves = wav;
        amplitude = amp;
        amplitudeRate = 1.0f;
        horizontal = h;
        vertical = v;
    }

    /**
     * initializes the action with amplitude, horizontal sin, vertical sin, a grid and duration
     */
    public static CCWaves action(int wav, float amp, boolean h, boolean v, ccGridSize gridSize, float d) {
        return new CCWaves(wav, amp, h, v, gridSize, d);
    }

    @Override
    public void update(float time) {
        int i, j;

        for (i = 0; i < (gridSize.x + 1); i++) {
            for (j = 0; j < (gridSize.y + 1); j++) {
                CCVertex3D v = originalVertex(ccGridSize.ccg(i, j));

                if (vertical)
                    v.x = (float) (v.x + (Math.sin(time * Math.PI * waves * 2 + v.y * .01f) * amplitude * amplitudeRate));

                if (horizontal)
                    v.y = (float) (v.y + (Math.sin(time * Math.PI * waves * 2 + v.x * .01f) * amplitude * amplitudeRate));

                setVertex(ccGridSize.ccg(i, j), v);
            }
        }
    }

    @Override
    public CCWaves copy() {
        CCWaves copy = new CCWaves(waves, amplitude, horizontal, vertical, gridSize, duration);
        return copy;
    }

}
